Sewing-machine attachment.



H. MITTLEBERG.

sewmc momma ATTACHMENf.

APPLICATION HLED FEB 20.1911.

1,300, 184:. Patented A pr. 1919 mars mmnzsnnne, on NEW YORK,

N. Y., Assmnon. Eco AMERICAN INVISIBLE- STITCHING MACHINE 60., INC., A'CORBORATION OF NEW YORK.

snwme-mecninn awraonmmrr.

Specification of Letters l' at'ent.

fPatented Apr. 8,1919.

., I, Application filed February 20, 19a. Serial in. 149,917.

To allwi'wm it mdy concern.

Be it known, that I, HARRIB MI'ITIJBBERG,

a sub'ect of the Czar of Russia, residin at New ork city, in the county of New ork "and State of New York, have invented certam new and useful Improvements in Sewing-Machine Attachments; and I do hereby declare the following to be a full, clear, and

' provision of a presser foot having one foot exact description of the-invention, such as will enable others skilled in the art to which.

out leaving the stitching unnoticeable.

it appertains to make and use the same.

his invention relates to sewing machine attachments, and more particularly to that type of attachment for permitting a machine of ordinary construction to produce work ordinarily done on specially constructe'd sewing machines.

It has for an object, to provide an attachment which produces blind stitching on an ordinary sewing machine. a

A further ob ect of this invention is the provision of a presser foot for attachment to an ordinary machine, by which, the needle may pass through the under face of a superimposed ply offabric without passing entirely through both faces of the'fabric.

further object is the provision of a presser foot having extensions or feet of different thicknesses. so that one foot bears on upon a super-imposed folded ply.-

A further object is the provision of a presser foot for a sewing machine having a single ply of fabric, 'while the other bears one foot thereof adjustably carried to ac commodate the presser foot to all fabrics.

A further object of this invention is the of a greater thickness than the other to form a stop and guide for a folded ply of fabric, and having a vertical recess formed in the guiding face, through which the needle partly passes. I

Further objects will be 'apparent from the following specification, appended claims. and drawings, in whic Figure 1 is a perspective view of a portion of a sewing machine showing this device applied thereto, r

Figs. 2, 3 and 4 show diiferent methods of mounting the adjustable presser foot. V Fig. 5 is a cross sectional view showing the manner of guiding the needle through the fabric. I r Heretofore, it has been necessary to-provide a specially constructed sewing machine of the head-of a needle bar 11 sli'dably mounted therein, to.

- p'resserl foot is The bar 24 is through to produce blind the like, where linings are desired to be socured therein in such a manner as to avoid the showing of such stitching on the outer garment, and in such cases, the needle has had a horizontal or arcuate'movement, but in this-invention, the fabric is folded to expose the under face, and the stitching is done through the folded portion, so that when completed, the fabric may be flat'teficld e result is accomplished by using the ordistitching for garments and nary vertically movable needle bar with a slightly altercd p resser foot.

eferring fiow tdthe drawings, and especially to Fig. 1 thereof, 10'indicates a part sewing machine, having the which bar theneedief'12 issecured. The presser foot bar 113 isalso slidable in the head and this bar which, is detachably mounted thereon. This recessed or cutaway, as at" 22, and is provided with the'hlead 23 through which passes the'barj'24, which is'heldin' posit ionin said headas by the set screws27, which extend through collars 26 which. .en-

gage thehead upon either side thereofland are locked inposi'tio'n by the set screws-27.

bent-to form the depending leg 28, which terminates in the foot 29, having the-groove 'OT'IlQt'ChiiiO formed therein.

The foot?!) is. provided with a depending ridge as'clearly shown in'Fig. 5 ofthe drawings, the lower edge of whichterminates be low the surface of the presser foot 21. This ridge-forms" a stop for the folded ply of fabric, and also presses the plyof the fabric carries a presser foot 21, 1

56' against the serrated feeding face' of the sewing machine. The folded fabric is shown atj-57, and the nap of the fabric along the fold extends underneath the notch 30 of the foot 29, so that the needle will pass there- In Fig; 2 a head 31 is provided to fit upon the presser footbar and this head has a set screw -.32 by means of which it may be locked thereon- This head has a passage- 'way33, through which passes the, bar 34, and said bar is locked in the head, as by means of the set screw 35. A block 3 5' is carried by the bar 34, and this block has a.

. passageway in which a stem from the socket member is locked as by means of the' s'et screw 37, Inthis socket member a'bar B8 carries the bar is adjustabliy mounted and held as by means "of the set screw 39. The bar 38 is bent to this hezid the bar l3 is held by the set screws 44, and the collar lf), which are locked on the bar by the said set screws. This bar depends, as at 46, to forni the foot 47 in which the needle guiding groove 48 is formed.

In the cmbodnnent 0i my invention shown in Fig. 4, there is shown the bar &9 which supports the head 50, which is held thereon as by means of the screw 51, andthis head 52, fastened thereto .as by means of the set screvv 53, said bar being bent to form the foot 5 1- provided as at 55 with the guiding groove;

Having thus described the construction of my invention. the operation thereof may now be understood:

In Fig. 5 the needle is shown about ready to pass through the recess between the feet 21 and 29, and through the groove 30 formed in the foot :29. As already stated, the ridge upon the bottom of the foot 29 serves as a stop for the folded ply of a. fabric, permitting the needle to pass through the superimposed ply of fabric without pass ing entirely through the faces of the fabric.

" Thus the blind stitching is accomplished in an exceedingly simple and efiicient manner.

Having thus described my invention what I claim as new and desire to secure by Lethers Patent is:

1. A sewing machine attachment of the class described comprising in combination e presser. foot-bar, a presser foot detechably carried hy said presser foot-her, e heed having a transverse passage formed therein, a bar rotetably nndlongitudinally movable in said passage, locking means carried by said head for engaging this bar, supplemental presser foot and guide carried by said bar having vertical and lateral adjush ment with respect to said presser foot, and. said supplemental presser foot having a vertical groove in the face thereof contiguone to saio. presscr foot to receive portions of a. folded section of fabric and the nap thereon through which a vertically movable needle passes.

2. Lil sewing machine attachment of the class described, comprising :1 prcsser footbar. a presser foot detachably curried; thereby. a head having a transverse passage formed therein, a bar rotetably and longitudinally inovable in said passage, locking means carriedyhy said head having engage-- incnt with said bar, :1. supplemental {newer foot adjustably carried by said bar, having vertical and lateral adjustment with respcct to said presser foot, and said supplemental press-er foot having a vertical passage formed in the face thereof contiguous to said presser foot throu h which u vertically reciprocating needle passes and in. which, portions of a length of fabric in folded condition and nap of the fabric enter to receive the vertical reciprocating needle. In testimony whereof I afiix my signature in presence of two witnesses.

HARRIS MI'lCiLEBETBtG. Witnesses:

(losers: Nnmsnov, DAVID FEICHE. 

